Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aquila |
Right ascension | 19 55 19.50021 |
Declination | −06° 44′ 05.2223″ |
Apparent magnitude (V) | 6.51 (6.94 + 7.98) |
Characteristics | |
Spectral type | F2V |
U−B color index | +0.05 |
B−V color index | +0.39 |
Astrometry | |
Radial velocity (Rv) | −13.10 km/s |
Proper motion (μ) | RA: +16.58 mas/yr Dec.: −60.18 mas/yr |
Parallax (π) | 12.22 ± 0.84 mas |
Distance | 270 ± 20 ly (82 ± 6 pc) |
Orbit | |
Period (P) | 425 ± 22 yr |
Semi-major axis (a) | 1.085 ± 0.024″ |
Eccentricity (e) | 0.9414 ± 0.0020 |
Inclination (i) | 103.05 ± 0.84° |
Longitude of the node (Ω) | 264.03 ± 0.77° |
Periastron epoch (T) | B 1974.28 ± 0.23 |
Argument of periastron (ω) (secondary) | 327.9 ± 1.7° |
Details | |
HD 188405 A | |
Mass | 1.4 M☉ |
Radius | 2.8 R☉ |
Luminosity | 13 L☉ |
Temperature | 6,646 K |
Other designations | |
BD-07° 5102, HD 188405, HIP 98038, HR 7599, SAO 143911. | |
Database references | |
SIMBAD | data |
HD 188405 is a binary star in the equatorial constellation of Aquila. The pair have an orbital period of roughly 425 years and an angular separation of 1.085″.
References
- ^ van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600
- ^ Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N
- ^ Malkov, O. Yu.; et al. (2012), "Dynamical Masses of a Selected Sample of Orbital Binaries", Astronomy & Astrophysics, 546: 5, Bibcode:2012A&A...546A..69M, doi:10.1051/0004-6361/201219774, A69
- Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 1 August 2017. Retrieved 21 May 2017.
- ^ Chandler, Colin Orion; McDonald, Iain; Kane, Stephen R. (2016). "The Catalog of Earth-Like Exoplanet Survey Targets (CELESTA): A Database of Habitable Zones Around Nearby Stars". The Astronomical Journal. 151 (3): 59. arXiv:1510.05666. Bibcode:2016AJ....151...59C. doi:10.3847/0004-6256/151/3/59. S2CID 119246448.
- Cvetkovic, Z.; Ninkovic, S. (2010), "On the Component Masses of Visual Binaries", Serbian Astronomical Journal, 180 (180): 71–80, Bibcode:2010SerAJ.180...71C, doi:10.2298/SAJ1080071C
External links
Constellation of Aquila | |||||||||||||
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